<template>
  <div>
<!--    面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
<!--    卡片视图区-->
    <el-card class="box-card">
<!--      添加与搜素区域-->
      <el-row :gutter="20">
        <el-col :span="10">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
          <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
        </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加商品</el-button>
        </el-col>
      </el-row>
<!--      商品列表区-->
      <el-table :data="goodsList" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" width="180px">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
<!--            编辑按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.goods_id)">
            </el-button>
<!--            删除按钮-->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeGoodsByTd(scope.row.goods_id)">
            </el-button>
          </template>
        </el-table-column>
      </el-table>
<!--      分页区域-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1,2,5,10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total" background>
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'List',
  data() {
    return {
      // 获取商品数据的参数对象
      queryInfo: {
        // 搜索关键字
        query: '',
        // 当前页数
        pagenum: 1,
        // 每页显示条数
        pagesize: 10
      },
      goodsList: [],
      total: 0,
      // 添加商品对话框的状态
      addDialogVisible: false,
      // 添加商品的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 控制编辑商品对话框的状态
      editDialogVisible: false,
      // 商品信息查询成功就把它保存到data中
      editForm: {}
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    getGoodsList: async function() {
      // 利用HTTP通过Ajax获取商品列表数据
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败')
      }
      this.$message.success('获取商品列表成功')
      // 没有return就代表获取成功 拿到商品列表数据
      this.goodsList = res.data.goods
      this.total = res.data.total
      console.log(res)
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
      // console.log(this)
    },
    // 移除商品
    async removeGoodsByTd(id) {
      console.log(id)
      // 弹框询问是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果商品确认删除，则会出现confirm这个字符串 点击取消则会触发$confirm中的错误，
      // 所以通过catch去捕获$confirm中所有的错误,并且return给了confirmResult去接收
      // 如果商品取消了删除，则会出现cancel这个字符串
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('商品取消了删除')
      }
      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getGoodsList()
    }
  }
}
</script>

<style lang="less" scoped>

</style>
